docstr: call function
docstr_tok: ["call","function"]
code: def __call__(self, *input_datas, batch_size=1):
      """
      call function
      """
      return self.forward(*input_datas, batch_size=batch_size)
  
file_path: PaddleHub/modules/image/keypoint_detection/hand_pose_localization/model.py
imports: import os
  import numpy
  from paddle.inference import create_predictor, Config
label_desc: Use image node_id 3 for calling the InferenceModel obj's underlying member method code with example usage: obj.__call__() and returns: self